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This is scientific Americans 60 second science,I'm Cynthia Graber.This will just take a minute.A coal mine can decrease the local environment but a Fungi may indivertantly help cleanup the mine with its own waste products. Researchers worked with the
英语美文-主动与被动语言的重要性 语言是表达自我,交流十分重要的途径。一个人的语言能传达很多信息,包括一个人的性格,思维,态度,生活环境,经历,职业等等。很多时候,我们作为
During a research experiment a marine biologist placed a shark into a large holding tank and then released several small bait fish into the tank. 在一个研究实验中,一个海洋生物学家把一条鲨鱼放进一个大的水箱中,然后投放
During a research experiment a marine biologist placed a shark into a large holding tank and then released several small bait fish into the tank. 在一个研究实验中,一个海洋生物学家把一条鲨鱼放进一个大的水箱中,然后投放
HEALTH REPORT-Heart Disease and C-Reactive Protein By Cynthia Kirk Broadcast: Wednesday, January 19, 2005 I'm Gwen Outen with the VOA Special English Health Report. American researchers have found evi